npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@jsonjoy.com/json-pointer

v1.0.0

Published

High-performance JSON Pointer implementation

Downloads

1,751

Readme

JSON Pointer - json-pointer

Fast implementation of JSON Pointer (RFC 6901) specification in TypeScript.

Usage

Can find a value in a JSON object using three methods: (1) JSON Pointer string, (2) array of steps, or (3) a pre-compiled function.

Examples

Find the value in a JSON document at some specific location.

Find by JSON Pointer string

import { findByPointer } from '@jsonjoy.com/json-pointer';

const doc = {
  foo: {
    bar: 123,
  },
};

const res = findByPointer(doc, '/foo/bar');

Find by path array

Alternatively, you can specify an array of steps, such as ['foo', 'bar']. Or, use the parseJsonPointer function to convert a JSON Pointer string to an array.

import { find, parseJsonPointer } from '@jsonjoy.com/json-pointer';

const doc = {
  foo: {
    bar: 123,
  },
};

const path = parseJsonPointer('/foo/bar');
const ref = find(doc, path);

console.log(ref);
// { val: 123, obj: { bar: 123 }, key: 'bar' }

Pre-compiled function

If you know the path in advance, you can compile a function that will find the value at that location, it will work few times faster than the previous methods.

import { $$find } from '@jsonjoy.com/json-pointer/lib/codegen';

const doc = {
  foo: {
    bar: 123,
  },
};
const finder = $$find(['foo', 'bar']);

const res = finder(doc);

Low-level API

Convert JSON Pointer to path array and back.

import { parseJsonPointer } from '@jsonjoy.com/json-pointer';

console.log(parseJsonPointer('/f~0o~1o/bar/1/baz'));
// [ 'f~o/o', 'bar', '1', 'baz' ]

console.log(formatJsonPointer(['f~o/o', 'bar', '1', 'baz']));
// /f~0o~1o/bar/1/baz

Decode and encode a single step of JSON Pointer.

console.log(unescapeComponent('~0~1'));
// ~/

console.log(escapeComponent('~/'));
// ~0~1